body{
    background-color: #f1f2f5; 
    padding: 15px;
 }
 .cover-box{
     display: flex;
 }
 .cover-left{
     width: 400px;
     height: 280px;
     overflow: hidden;
     margin-right: 20px;
 }
 .cover-right {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  /* 预览区域的样式 */
.img-preview {
    width: 200px;
    height: 140px;
    background-color: #ccc;
    margin-bottom: 20px;
    overflow: hidden;
  }